Aqueous ink and aqueous dye dispersion for aqueous ink

1. An aqueous dye dispersion for an aqueous ink, comprising:

a dye derivative as indicated at Formula (1) below;

a water-insoluble dye;

a dispersant; and

water;

wherein Formula (1) is given by

wherein, at Formula (1),

R 1 is a group as indicated at Formula (2) below;

R 2 is a group as indicated at Formula (3) below;

m and n are each 0 or 1 but m+n=1;

R 3 is at least one species selected from among a hydroxyl group and an amino group;

l is 0 to 2; and

when l=2, R 3 is respectively the same or different;

wherein Formula (2) is given by

wherein Formula (3) is given by

wherein, at Formula (3),

R 4 is a phenylene group or an alkylene group having 1 to 4 carbons; and

R 5 and R 6 are independently selected alkyl groups having 1 to 4 carbons.

2. The aqueous dye dispersion for the aqueous ink according to claim 1 ,

wherein the dye derivative as indicated at Formula (1) above, is a dye derivative as indicated at Formula (4) below;

wherein Formula (4) is given by

wherein, at Formula (4),

R 1 is a group as indicated at Formula (2) above;

R 2 is a group as indicated at Formula (3) above; and

m and n are each 0 or 1 but m+n=1.

3. The aqueous dye dispersion for the aqueous ink according to claim 1 , wherein in Formula (1), m=0 and n=1.

4. The aqueous dye dispersion for the aqueous ink according to claim 2 , wherein in Formula (4), m=0 and n=1.

5. An aqueous ink comprising:

the aqueous dye dispersion for the aqueous ink according to claim 1 ; and

a surfactant.

6. The aqueous ink according to claim 5 which is for inkjet recording.